The incident began sometime around 1 a.m. when the driver of the Mustang apparently lost control while heading east on Highway 509 at high speed.
The car crashed through a fence surrounding a rail yard and skidding into the rail cars parked there. When the Mustang hit the last rail car, it punctured a diesel tank and fuel began gushing onto the ground.
A passer-by spotted the damage and called 911.
Fire crews responded and found the spill, but the driver of the Mustang was nowhere to be found.
A crew from the Department of Ecology responded to handle the spill. The size of the fuel spill was not immediately know, but a fire official at the scene said it was considerable.